Ingram's 2005 Yamaha Zuma Build

[ingram]

Oct 9, 2020 14:00:52 GMT -5 jayrod427 said:

What choke cable did you use? I just got the polini choke cable and am installing the same carb. The polini on the choke knob end has a set screw cable end instead of the pressed on ball. So you just trim the knob end however long needed. Looks like you had to do the carb end with the soldering.

I have the Stage 6 choke lever and I just went to check it out and sure enough if you open the lever then you can unscrew it and there is a set screw to adjust the length of the cable... Well now I know and feel like an idiot that I didn't try harder to pull it apart before going to work on cutting and soldering the carb end. 

[jloi]

don't worry about it. can't tell you all the times....... etc.

[jayrod427]

If I had a dollar for every bonehead moment in my life.... LOL

[aeroxbud]

Oh well. Useful information for the future.

[ingram]

Well I just picked this up over the weekend...
The Zuma is still my main scoot but this didn't cost me as much and hoping my wife will start riding. For now I just want to get the carb cleaned up on it and running smooth before thinking about any upgrades. I have read some pretty good results on these with just derestricting the carb and a new exhaust with tuning.
2005 Piaggio Typhoon. Has just over 900 miles on it but had been sitting for years so needs a little care to get it running smooth again. It starts after a few kicks and stays running but bogs at WOT.

[jloi]

sweet ! looks  in great shape too

[Zino]

Nice looking scoot .

[ingram]

Ok finally finished putting my Polini CP in. The throttle cable I originally ordered to use with the NCY grips was too short so ended up getting a PWK throttle cable from Scooter Swap Shop which fit perfect. Got to mess with tuning a little yesterday but need more time on it.
Currently using 38 pilot, needle one clip rich, and 84 main jet. Started at 98 main jet and flooded my plug as soon as I tried to WOT so started going down from there and ended at 84 for now. Top speed and RPM are still lower than stock carb and temp is hitting 300-305 max at WOT so I feel like I could keep going lower but thinking I need to check my idle and needle again as 84 seems low already.

[pinkscoot]

Oct 21, 2020 16:17:26 GMT -5 ingram said:

Well I just picked this up over the weekend...
The Zuma is still my main scoot but this didn't cost me as much and hoping my wife will start riding. For now I just want to get the carb cleaned up on it and running smooth before thinking about any upgrades. I have read some pretty good results on these with just derestricting the carb and a new exhaust with tuning.
2005 Piaggio Typhoon. Has just over 900 miles on it but had been sitting for years so needs a little care to get it running smooth again. It starts after a few kicks and stays running but bogs at WOT.

Now your talking what I know. I was familar with the later Typhoons that had the 4 valve 4T engine but this is the same engine as the ET2 and carbureted SR50's. I Googled it and found this: www.motorscooterguide.net/Piaggio/Typhoon-50/Typhoon-50.html  I wish you the best of luck and look forward to your build thread.

[ingram]

Alright I feel good about my carb tune now. Rechecked air mix screw and ended up at 1.5 turns out for best idle. Then before messing with the needle again I went down to an 82 main and things were much better. Hit 50mph top speed at 9770 rpm and max temp of 321 degrees. Went down to an 80 main and had similar results but max temp went up to 334 degrees.
I didn’t really get to push the 80 the same as the 82 so I’m gonna leave the 80 in for now and get some more runs in before making my final decision but if it remains similar results I’ll go with the 82 since it runs cooler.

With the 17.5mm carb the entire throttle range is much stronger now but especially low to mid throttle. Top end is not a big difference although it runs cooler. I will try the gears again after getting some more rides in and see if the combination of a larger carb and no more air leaks gets me in the 55mph range.

[ingram]

Just a quick update ended up settling on the 82 main instead of 80 as the temps just kept creeping towards 350 on the 80 compared to staying in the 320's on the 82 and my rpm and speed were basically the same between the two.

[Zino]

Sounds like the 82 is the best jet
I have found the same thing the bigger carbs give lower and mid throttle power the most and mild increase on top end .
They really bring the temps in control at wide open ..

[ingram]

Well I decided to try the modded airbox I originally bought with the UNI filter and see if anything changed. I got more experience tuning as I tweaked many carb settings to get the best feeling but overall I am really happy with the modded airbox and UNI filter and could definitely feel a difference from stock airbox and filter for most of the throttle range. Everything is much smoother now and it kicks into the power band faster. The overall top speed is about the same as I had maxed out my variator anyway with stock airbox but definitely in stop and go and general riding around the modded airbox with UNI filter is better for me.

I ended up with a 90 main jet, 1 1/4 turns out on the air screw, and needle one clip rich. So the biggest difference was I needed to go up 8 sizes on the main jet but the rest of my settings were pretty much the same even though I tweaked all of them and did many runs to determine the final result. Ended up maxing out at 10,050 rpms and 51-52mph on a straight flat 1 mile run which was my best.
I even switched back to the stock airbox and filter, tried the UNI filter in the stock airbox, along with running with snorkel in and out and no matter what I could not get the same oomph that the modded airbox with UNI filter would give me with the final tune.
It definitely got close with stock airbox, UNI filter, and snorkel removed but I just couldn't get it dialed in as well as with the modded airbox.

This is the modded airbox which I still used the stock snorkel with it but it has an additional intake port right next to the snorkel and it has internal dividers that separate those from each other and route the air more towards the bottom of the airbox so it doesn't go straight to the intake boot. The intake boot itself is a little larger in diameter than stock as well.


The mounting point didn't line up exactly with my CVT cover so I used a variator weight as a spacer which worked just right. It has another large port on this side that can be opened up for race builds I guess but I sealed the cap on that port.


I pulled the brand new plug at the end of all my tuning and was pleased with the coffee brown color it had.

[twostroker]

Aug 11, 2020 9:30:46 GMT -5 ingram said:

Oh and I installed a Malossi RS3 shock I got from Scooterpartsco while I had the cosmetics off. I thought the shock was going to be longer and raise the rear a little but it ended up being the exact same length as stock so oh well. At least now I have the ability to adjust the tension as I see fit.

That shock looks really good on your bike. Nice!

[ingram]

Hey guys I put a Polini Corsa on my Christmas list for this year so there is a chance I will get one.

Question is do I really need to upgrade my crank for the Corsa or can I get by with my stock crank since it has low mileage? Will definitely be putting the 14/42 gears in with the Corsa if I get it to help keep the overall max RPMs down. From research it seems some get by with stock crank on Corsa as long as they don't push it to extremes but a lot upgrade just to be on the safe side.